<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>双飞翼布局</title>
  <link rel="stylesheet" href="./myCss/threesome.css">

</head>
<body>
<div id="main" class="col">
  <div id="main-wrap">
    this is main
  </div>
</div>
<div id="left" class="col">
  this is left
</div>
<div id="right" class="col">
  this is right
</div>
</body>
</html>
